CALGARY - Enbridge Income Fund Holdings Inc. (TSX:ENF) has reported a slight dip in fourth-quarter earnings. The publicly traded holdings fund, majority-owned by oil and gas pipeline company Enbridge Inc. (TSX:ENB), says earnings for the three months ended Dec. 31 were $16.9 million or 39 cents per common share. That was down from $16.8 million or 46 cents in the same prior-year period. Enbridge Income says the Q4 earnings reflected the company's increased ownership in the fund and a 11 per cent per unit increase in the fund's distribution.